182 Miss Eves, On some experiments [Nov. 10, 



If we examine these results we see that from the last five we 

 can deduce c. x in two ways, and that we shall get for our results : 



•0990 x 10 -15 , 



and -0986 x 10 -15 . 



Again, from them we get, 



^+c 2 + c, = -5938 x 10' 15 , 

 c, + c 4 = -5928 x 10 -15 , 



c. x + c 3 + c 2 = -5934 x 10 _lD . 



Thus we see that all our results agree fairly well among them- 

 selves. 



November 10, 1884. 

 Pkof. Foster, President, in the Chair. 



The following were elected Fellows : 



T. C. T. Eeeve, B.A., Caius College. 

 H. M. Elder, B.A., Trinity College. 



The following communications were made to the Society : 



(1) On some experiments on the Liver ferment. By Miss F. 

 Eves, communicated by Mr A. S. Lea. 



The experiments on which this communication are based, were 

 made with the object of obtaining some more definite information 

 as to the existence and action of the ferment which in the liver is 

 usually supposed to be the chief factor in the conversion of gly- 

 cogen into sugar. 



From general consideration it appears probable that the con- 

 version of glycogen into sugar in the liver may be regarded as due 

 rather to the special activity of the hepatic protoplasm than to 

 the action of any specific ferment. An examination of the litera- 

 ture on the nature of the ferment shews that an amylolitic ferment 

 can be obtained from the liver ; but it shews also some uncertainty 

 as to its preparation by several observers, and that it is not so 

 characteristically present in this organ as the importance of the 

 part it plays would seem to imply. No statements exist as to the 

 nature of the product which can be obtained by the action of this 

 ferment on starch and glycogen, since it does not seem to have 

 been isolated in a sufficiently pure state to allow of such observa- 

 tions being made. 



An effort was made in these experiments to obtain the sup- 

 posed ferment in a fairly pure state and this was successfully done 



